Understanding the CAD output formats: GLB, STEP, and STL

Every CAD generation produces multiple file formats, each suited to a different job. Knowing what each one is for helps you grab the right download.

The three formats

• GLB (model/gltf-binary) — the web-viewable format. This is what renders in the in-app 3D viewer so you can inspect the part in the browser.
• STEP (model/step) — the format for CAD software such as Fusion 360 or SolidWorks. Use STEP when you need to open the part in a professional CAD tool or send it for manufacturing.
• STL (model/stl) — the format for 3D printing.

What gets archived

When the HIIE Engine generates a part, it archives the GLB, STEP, and STL files together, plus a JSON metadata file and an optional preview PNG. These land in your project's Design folder as a versioned design.

The premium Meshy text-to-3D path produces a textured GLB plus a printable STL — mesh formats only, no STEP — also auto-archived into the Design folder.

Picking the right download

• Want to look at it on the web? GLB is already rendering in the viewer.
• Opening it in CAD software or sending it to a factory? Download STEP (HIIE Engine designs).
• Sending it to a 3D printer? Download STL.

In Schematics, each design offers its native deliverable — STEP for HIIE Engine designs, STL for Meshy premium and local designs.